一年没来,循例散分
照旧,发两个自用的“小”东西,给点改善意见的多些分,纯接分的巡查管理员应该会删贴的,嘿嘿
注:因为是自用,传入基本是格式正规的,所以没有做容错,这个用者自理
//搜索文件中的字串,返回所在行的行号
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> $lines=new ArrayIterator(file(文件名)); $regex = 搜索用的正则; //必须是正则,因为下面的迭代器是正则迭代器 $regexFilter = new RegexIterator($lines, $regex, RegexIterator::GET_MATCH); $items = iterator_to_array($regexFilter); //其实上面这段东东还能更广泛应用,善用对处理大文件有很大帮助,自己去举一反三吧 $keys = array_keys($items); //如果你搜索的值不是唯一的,这里就是多个行号的数组(注意第一行是“0”) $lineNumber = $keys[0]; //如果你搜索的值是唯一的,这里就是你要的行号
//对行列(矩阵)数组交换一维和二维键
什么是矩阵数组,每一维键名存在且顺序是对应的二维数组,简单举例就是SQL后得到的二维数组,当然还有更多
注意是顺序对应,不然没有意义,两维都是数字键名也能用,但数字键名感觉也是意义不大,因为数字键名用交并差很方便的
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> class squareArray { public function swapRowCol($array) { $mit = new MultipleIterator(MultipleIterator::MIT_KEYS_ASSOC); foreach ($array as $key => $value) { $temArr = new ArrayIterator($value); $mit->attachIterator($temArr, $key); } $arr = array(); foreach ($mit as $item) array_push($arr,$item); //这里本来想直接iterator_to_array省循环,但出错,不解 if (isset($array[0])) $arr = array_combine(array_keys($array[0]),$arr); return $arr; } } //类中只写了一个交换方法,有兴趣的人可以自行扩展
SPL代码很简洁,可惜文档太少了,很多都要自己写后测试看结果,累啊
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是好久没来了,还以为你跳出苦海了呢
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在沙发上迷糊一会~
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过来加点人气
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唉~~~~我这都为分少而蛋痛的不得了,楼主还挥分如土……技术烂伤不起啊~~~~~~~~~~
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东西不错 搬个小板凳看
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几小时没来 赶紧来接分 高呼代码共享万岁.
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支持一个,都没有看到代码呢
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接分积分,很久没来了
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开源万岁~
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谢谢楼主分享,坐等牛人的改进方案
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悄悄的路过。。。支持。。。。。
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过来加点人气
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我党需要楼主这样的人才,入党吧。
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ArrayIterator 是个高深的东西,文档太少,表示不解
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小东西大用处,不懂PHP,学习来着,坐等高人
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112341354354
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我背着麻袋来接...
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PHP貌似不是很难学......
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PHP据说与c很像。。。
有机会可以学学。。
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这个号不知道丢了多久了,上来冒个泡
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PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.

Tostoreauser'snameinaPHPsession,startthesessionwithsession_start(),thenassignthenameto$_SESSION['username'].1)Usesession_start()toinitializethesession.2)Assigntheuser'snameto$_SESSION['username'].Thisallowsyoutoaccessthenameacrossmultiplepages,enhanc

Reasons for PHPSession failure include configuration errors, cookie issues, and session expiration. 1. Configuration error: Check and set the correct session.save_path. 2.Cookie problem: Make sure the cookie is set correctly. 3.Session expires: Adjust session.gc_maxlifetime value to extend session time.

Methods to debug session problems in PHP include: 1. Check whether the session is started correctly; 2. Verify the delivery of the session ID; 3. Check the storage and reading of session data; 4. Check the server configuration. By outputting session ID and data, viewing session file content, etc., you can effectively diagnose and solve session-related problems.

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

Configuring the session lifecycle in PHP can be achieved by setting session.gc_maxlifetime and session.cookie_lifetime. 1) session.gc_maxlifetime controls the survival time of server-side session data, 2) session.cookie_lifetime controls the life cycle of client cookies. When set to 0, the cookie expires when the browser is closed.


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